Chaeles l



(No Model.)

C; L; CLARKE &IJ. LEIGE. ELECTRIC BATTERY.

Patented Peb. 1251884;

4FIGJI.

Manchester, int-he county of Lancaster, EngV "UNITED STATES PATENT OFFICE.

`cnAni;.;ns L. CLARKE AND JOHN LEIGH, OF MANCHESTER, COUNTY on.v

LANCASTER, ENGLAND,

ASSIGNORS .LO THE DOMESTIC ELECTRIC MANUFACTURING COMPANY,- OFNEW YORK, N. Y.

' ELECTRIC' BATTERY.

ePEoIFIcA'TIo'N forming para ofLeael-srarent No. 293,563, dated February 12,1884.

Applcntionled March 20. IEEE. (No model.) Talented in England March, 1, IESZ, No. 935; in Frm ee'Mnrch ll, 153i', No` l-l7,8tt0;V

in Belgium March 14, IgE?, No. 57,354; in Gennany March 31, 1.882, Nb. 2l,95; in Canada April B, 1882, No. 14,563; in Italy April 10, 1882, No. 14,079; iu Austria. June 24. 18:12. No. 11,800, and in Spain August l. ISS2. No. 2.959.

I0 awhom itin/ ay cncernf l Be 1t known that-we, CHAlzLns LEIGH CLARKE and JOHN LEIGH, both residing in land, and subjects of the Queen of Great Britain and Ireland, have invented certain newand useful Improvements in Electric Batteries, for which BritishLetters Patent No. 985,

AMarch l, 1882, were granted to us, and ot' which the following is a specification.`

Our present improvements in electricbatteries are more particularly 4designed to' be applied to our electric gas-lighters, for which United States patents were granted to us April 26, lSSl, No. 240,661, and .Tuly 25, INSJ, No. 261,677; but our ilnprovmnenls are also applicable tobatteries 'l'or various other uses.

In the accompanying' drawings, Figure 1 is a side View ot' one ot' the elements ot' the' eell` of a battery; Fig. 2, a side view of another element; Fig. 3, a sectional View -ot' a single cell-battery; Fig'. 4, a vertical section ola modification; Fig. .5, a sectional plan; and Fig. ti, a plan view oll the lntltery, lfig'. l.

AI11 constructing our improved battery in the iiat form illustrated in Figs.' l, {La-nd 3, suitable i'or the gas-lighter illustrated in our iirst patent above mentioned, we Vtake a rect-- angular piece ot' thin silver-foil, a a, Fig. l, on earh side of which we lay a coating (about one-eighth ol' an inch thick) otchloride of silver iu adry powdered state, keeping;` the latter in place by wrapping round the whole a single fold Ol' blotting-paper, the, silver-foil being provided with a projectingIF lug, b b, to

which. one ofthe wires is to be connected.

`On each sido we then lay,- :i picco el :zine plato,

Fig. 2, of about the same size; each plate beingprovided with a projet-ting; lng', c c, atene end or side, for forming.; the connection with the other wire. The whole is then wrapped again in one fold lof blotting`pa1nxr, which is held in position by two or three elastic bands. It is next subjected to pressure -in a screwpress or otherwise, to solidify the chloride of 1 silver. Itis then placed in a small ebonite or wooden box or cell,`d d, as seen at Fig. 3, containing the exciting-fluid, which is a saturated.

solution of sulphate :of sodium of a specific gravity of vfrom eighteen to twenty-sevendeu grecs, or thereabout, the quantity of iiuid being rather more t-hanwill be absorbed by the blotting-paper. The reason of using sodio sulphate in this cell is to prevent the waste of silver chloride, so troublesome in the cells in which a lnoderatelystrong solution of any ot' the chlorides for the exciting-Huid is'used,

such as a solution of zincic chloride oranimof This waste is caused by the silnie chloride. ver chloride being soluble more or less in such a solution, and when silver chloride in solution is brought in contact with t-he zinc it is decomposed, the silver being depositedupon lhesurface `ofthe zinc-electrode, producing local action, as well as causing,` the great waste of silver chloride. Sodic-sulphate solution being entirely free-frein this property of dis- Y solving silver chloride, and being also a goed conductor, we employ it with advantage in' tive electrode, the chlorine combiningr with sodium ot the sodio sulphate to produce sodio chloride, and the sulphurie acid radical unites with the aine, produc-int;- zint'ie sulphate. as represented by the ffollowingl equation:

ol the zincic sulphatewith the sodiclchloride,i

as represented by the following' equation:

XaCl ZnSOFTLNaQ-I ZnCh Instead ot', the sodiov sulphate we may use potassio sulphate or ammonio sulphate ill adiluted'solntion.

ln construct-ingerir improved battery in the cylindrical form, as suitable l'or the electric I o'" vwhole to pressure to solidify tlic dry chloride.

A Ve then remove the top slab, and placing -on the silver-foil a cylindrical core, gg, of eboniteor other suitable inaterialgye rollthe ver-foil with 'its adherent-v eoat'ing ot chloride' 41 15 of silver round it, with the muslin outward,

3o age.

25 the core and ccll i i.

and then bind the whole together by ai'cwl turns -ot' thread or in any other suitable manner. Ontsidethis we place a tube, 7L l1, ol' zinc, lcaring a cylindrical spacebr-twecn them 2o of about an eighth of an inch. This battery is placed in a cell, 'i v1', of a tubular forni, coniposcd .of vulcanitc or other suitable material, into which the zine tube hy Il. tits, and a metallic bolt, k la, is passed through the center of rlhe exciting-Huid being added, the top plate, Z I, of vulcanite, is placed ron (over an india-rnbbcrwishcr) and the nut m screwed onto the end ofthe bolt. L 7;, which holds all together securely and prevents leak- As the central bolt passes through the lng y of thcsilvcr-ibilf j", it establishes a con! ncction with one pole ol' the battery, and the zine h h is similarly connected to a brass ring, h n., outside the vulcanite top l Z, by meansof three zinc screws, o o o, which pass through the 35 Vuleanitel l and into a Harige at the top of the -zinc tube h h. l

lf preferred, the arrangement ofthe elements of this battery may be reversed-that is to say,

a zine core, with silVer-fol outside and the 4 chloride between-or the order may be silver, zine, silver; or zinc, silver, zinc.

The exciting-fluids which 'we employ with this battery are a diluted'solution of sodic sulvp hate, or ot' potassio sulphate, orammouic sul-T45 hatc. l

It will be evident. that although these -forms oi' our improved battery are specially adapted y, for use in our improved electric gas-lighters, our in'iprovelnents'- may be applied to .other 5 forms ot batteries with good effect.

To claim as our invention- Anelectric-battery cell consisting of a case containing zinc and silver'foil and chloride of silver, with a solution of an alkaline sulphate 5l asan excitant, substantially as described. l'n'testimony whereof we have signed our names to this specification inthe presence oty 't'wo subscribing witnesses. i

- Cl-IAS.'y L. CLARKE` .TCHN LEIGH.4

Witnesses: i v' .Tous Hommes,

NV. Botsovmn. 

